#define _CRT_SECURE_NO_WARNINGS 1
#include<stdlib.h>
#include<iostream>

using namespace std;
struct Stack
{
	int* a;
	int size;
	int capacity;
};

void StackInit(struct Stack* ps, int n = 4);

void StackPush(struct Stack* ps, int x);

void f(int a, char b);

void f(char b, int a);
